I see this as pure marketing hype. A clever marketing campaign, but one of hype, nevertheless.
Why?
Pretty easy to say "we conducted our inspection and found that the damage was no fault of the PSU".
And the truth is, the above most likely is true!
Component failure most likely is NOT the fault of the PSU. That is one HUGE advantage for using
low voltage DC to power today's modern electronics.
Over the decades I've been in this business, I have had plenty of PSUs fail - some catastrophically, as in smoke and flames. But it almost always is the input (high-voltage AC) side of the PSU that fails. Note even generic, budget PSUs have basic protection circuits to kill output when a fault on the input side is detected just to prevent damage to connected devices.
Note these protection circuits
are required virtually in every country in the world by UL, CE and other safety regulatory agencies around the world. If not certified, they cannot be sold in these countries.
Yes, I have seen connected devices die along with a PSU, but these events typically are the result of an extreme input anomaly (nearby lightning strike, for example). And frankly, in those events, the PSU typically fails, kills output and actually protects the connected equipment - most of the time.
Of course there are [probably] exceptions, but I personally have never seen a case where it was obvious (or that I could prove) damage to connected equipment was caused by the PSU, and only the PSU.
If you buy a MIS, Corsare, Seesonic, EVAG, or Colormaster power supply from some guy in a dark ally, then you may risk damage to your connected components if (or should I say, "when") the PSU fails. But if you stick with known (properly spelled) brand names, and you buy them from reputable vendors, I say, don't worry about the connected devices being damaged by the PSU.
And of course, you already have your computer protected by a "good" UPS with AVR anyway, right? RIGHT?